easiest

The ease of doing business index is an index created jointly by Simeon Djankov and Gerhard Pohl, two leading economists at the Central and Eastern Europe sector of the World Bank Group. The academic research for the report was done jointly with professors Oliver Hart and Andrei Shleifer. Higher rankings (a low numerical value) indicate better, usually simpler, regulations for businesses and stronger protections of property rights. Empirical research funded by the World Bank to justify their work show that the economic growth impact of improving these regulations is strong. An example of such empirical research is a paper on business regulation and poverty, published in Economics Letters.
"Empirical research is needed to establish the optimal level of business regulation—for example, what the duration of court procedures should be and what the optimal degree of social protection is. The indicators compiled in the Doing Business project allow such research to take place. Since the start of the project in November 2001, more than 3,000 academic papers have used one or more indicators constructed in Doing Business and the related background papers by its authors."

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